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Problems in executing a reverseHashMap progam

 
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Hi all
I was trying to reverse a HashMap and it compiled fine. When I executed it, it gave me a java.lang.OutOfMemoryError. Then, I restarted the PC and tried executintg other working programs/this program, the process never ends. I want to execute other programs now. Please help me!
P.S: If you want to look at the code which caused all this, please see below

Thanks in advance
 
vidu mayur
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Hi all
I found the error. The list didn't have any values in it.
Thanks
Vidu
 
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